Mold for glass caskets, bath-tubs, or similar articles.



D10. 875,567. PATENTED DEC. 31, 1907.

5, BONSHIRE.& 'J STAFFORD. MOLD FOR GLASS 0ASKET$, BATH-firms, OR SIMILAR ARTICLES APPLIOATION FILED FEB,15, 1907.

(H. n. X Z o o h c 3 WI TNESSES'. IN VEN TOR s,-

ATTO' qUNITED S T TEsPATENT OFFICE;

. riiconno'nsntan, or PERU, KANSAS, AND JAMES M. STAFFORD, or PETERSBURG, NDIANA! MOLD Fora GLASS cAsKETs, BATH-runs, on SIMILAR ARTICLES;

To cllhtbho m 'it mag comma I Chautauqua,

Be itknown that we, JACOB BONSHIRE and :JAMEs M. STAFFORD, citizens of the United States, residing at Peru, in the county of diana, respectively, have invented certain v new-anduseful lmprovements in Molds for GlassCaskets, Bath-Tubs, or Similar Articles; and we do declare the followingto be a full, clear, and exact description of the in- Jvention, reference being had to the accomanying drawings, and to the letters and gures of reference marked-thereon, which form a part of this specification.

This Invention relates to metallic molds Ii Zfor makingheavyglassware such as burial caskets'or vaults, bath tubs and slmllar vessels, the invention having reference particularly to molds or forms for articles of molten glass.

-The objects of the invention are to pro-' vide a mold of the above-mentioned characterwhereby vessels or articles similar to bath tubs may be formed with the m'olten 7 glass under pressure so as to obtain the, best results invproducing walls of approximately uniform densityand-strength, a further ob jectbeing to provide a mold for the abovementioned Ipurposes whereby caskets or the like may e reduced ,eX editiously and -=-economically of glass or 'simi' ar material. 1

With the above-mentioned and minor obje'cts in view theinvention consists in a mold comprising a base upon which the top of the side of the vessel or article may be formed, an inner formattachedto the base for 'sha ing the interior of the vessel or article, a orm outer form, the mold being provided with means for heating the chamber formed'by the innerform and the base for heatmg the mold; And the invention consists further in Y the novel parts and-the combinations and Specification of Letters Patent. 'Application filed February 16. 1907. Serial 1T0. 857.433.'

State of Kansas, and at Petersburg, in the county of Pike and State of Inshaping the I Patented Dec. 31,1907.

arrangements of ticularly describe and referred to in the accompanying claims.

Referring .to the. drawings Figure l-is a side elevation of the -mold; Fig} 2, an end elevation; Fig. 3,- a top plan; Fig. 4,'a"fragmentary, sectional detailflshowilng attach-- ments to the plunger and the inner form;-

arts as heremafter par- Fig. 5,; a transverse vertical sectional View. approximately at the center of, the mold Flg. 6, a fragmentary detail view; and, Fig.

'7, a fragmentary top plan of-the base-and form plate thereof.

Similar reference characters in the differ.-

parts or features Of'COIlStI'lTCtlOH.

The mold comprises a base A that is adapted to be su ported in a suitable maent figures of the drawin s designate like chine, the base bemg usually oblong in plan but the contour may be variously shaped to suit such article asmay be desired, the contour in the present instance being substantially rectangular with rounded corners.

The narrower ends of the base are provided with handle-bars B B 'B for lifting the base. The base is provided with a suitable'number of bolt holes 0 arranged at a suitable distance fromthe edge of the base to receive bolts for securing the inner form to the base, ,the latter .also' having an aperture D to receive a gas pipe, and other apertures'E'for the' passage of air through the base;

The base has two projecting'flanges F and F, one at-either side thereof, and a groove G is forme'dinthe top of the base that extends between the bolt holes Cand the'edge of the base, the. groove "being semicircular transversely so. that when the molten glass isformed on the base; said groovewill form a tongue or bead for matching or jointing purposes on the-top of the side wall of the casket when such article is made. A suitable filling H is provided which is cylindrical in crosssection and may bev inserted into the groove G so as to fill the groove and also provide'a form similar to a bead upon the base so that a groove may be produced in the top of the side wall of the casket to receive the tongue or -bcad which may have been previously formed on'a companion part by means of the groove G. 1 y

w A form plate'I" rests uj onrthe base A, or-

tions thereof being on t e flanges ,F an F of the base and extends inwardly to the groove G. the inner portion J having less heightthan the main portion of the plate so that a gage shoulder K is formed for gaging 5 the outer form. The top of the thinner portion J is in the same plane as the portion of the base A that is inward of the groove G. the outer portion plate I extending somewhat higher. The

plate I is normally held in place by a suit-able number of bolts L.

An inner form for shaping the interior of the casket or other article is made of suitable contour and comprises an endless side wall )1 1% that is normally secured to the base A by bolts X, the inner form having a topO attached to the side wall or integral therewith to form the inner surface of the bottom part of the article that is to be molded, said inner form somewhat resembling a casket or a bath tub inverted upon the base. the contour of course being in accordance with the contour of thebase.

An. outer form comprises a side Wall P which is continuous about the inner form and somewhat larger in dimensions, the side wall P resting upon the thinner portion J of the form plate I and against the shoulder K '-thereof. The opposite or uppermost edge of the side wall P has an inwardlycurved por tion Q from which extends a neck 'wa-ll R into which the glass may be poured for forming the desired article. The narrower end ortions of the wall P are provided with andle-bars S S S for lifting and controlling the outer form.

A plunger T is adapted to move vertically in the neck R and be guided thereby, and is provided with a centrally arranged shank T 40 adapted to be secured to a suitable portion of the machine in which the base A may be supported so that the machine may operate the plunger to withdraw it from the neck R or to force the plunger downwardly in the neck. The plunger T is provided with an adjustablei'ormer U that may be held with an end thereof flushwith the lower face of the plunger or be projected downwardly a suitable distance so as to enter a recessV that is formed in the top portion .0 of the inner form. the recess Y being normally provided with a cover Vt which however, may be removed so that the former Y may enter the recess. This former U is intended to be used when molding the top or lid portion of the casket to force the glass into the recess V whereby to form a cup shaped portion, the bottom of which may afterward be ground off so as to produce a ent hole in the top of a burial casket; the vent hole as will be understood being provided with a valve so that a partial vacuum may be produced in the easket after having been sealed.

A gas burner X is arranged above the base or main portion of the and then the molten glass or similar material determined amount of the material has been A. being within the inner form, and is provided with a sup ly pipe Y so that the mold may oe suitably ieated before molding operations are begun.

Preferably a groove a is formed at the interior of the outer form at the junction of the curved portion Q and the neck R, a corresponding groove 1) being formed in the under side of the edge of the plunger T so that the two grooves will form a bead under the bottom of the casket or bath tub along the; rounded edge thereof.

It will be understood that the form plate I may be variously shaped, and also the top of the base A may vary somewhat to suit the formation of various articles, as for instance to form sealing joints between the body part and the cover part of a burial casket or other casket as herein described, or the modifications may be adapted to form the top edge of the wall of a bath tub orxother vessel in any .desiredshape. And if desired of course the longer sides of the side walls of the inner and outer forms may be curved or formedin accordance with the conventional co'lfin shape instead of being straight as illustrated, but as will be understood the inner and outer forms have a suitable amount of draft taper to permit of withdrawal from the molded article.

In practical use a suitable portion of the operating machine with which the mold is to be used, will press upon the outer form P to normally hold it upon the form plate I. The

plunger T is to be elevated out of the Way I 10( is to be poured into the neck R so as-to flow. over the top Q of the inner form and into the space between the inner form and the outer form down onto the base A, and after a prepoured-in, the plunger T is to be-forced gradually down into the neck R until'a point is reached a proximately as shown in Fig.5 which wil cause all spaces to-be filled and form a bottom for the vessel of suitable thickness between the top 0 and the plunger T. Any air may be forced out under the lower edge of the outer form Wall P, the faoings of i the parts being slightly uneven so that air may escape, it being understood that the joint faces need not be machine finished, or suitable vents obviously may be provided. The product may readily be-removed from I the mold after having become sufficiently cooled.

Having thus described the invention, what is claimed as new is 1. A mold including a perforate base,.a:- separate hollow inner form comprising a side wall and a top on the wall to form a closed chamber accessible through the erforation in the base, a continuous outer orm to inclose the side wall only of the inner form, and

a plunger in the'outer form to cover the top of the inner form.

2. A mold including a perforate base, a separate hollow inner form to be inverted on the base and form a closed chamber accessible only through the perforation in the base,

means for holding the inner form on the base,

a continous outer form to inclose the side wall only of the inner form, means forgaging the outer form on the base and with respect to the inner form, and a lunger in the outer form to cover the inner orm.

3. A mold for glass vessels including a base having an air-hole therein, a hollow inner form mounted on the base to shape the interior of a vessel-inverted, an outer form on the base and extending about the inner form to shape the exterior of the side wall of the vessel v a plunger movable in the outer form to shapethe exterior of the bottom of the vessel, and a burner in the hollow inner form upon the base.

l 4. A mold for glass vessels including a'base having ahollow inner form secured thereto removably, .al-form plate on the base and extending about the lower portion of the inner form, there being also a groove extending about the lower portion of the inner form, an

' outer form supported by the base and'extending about the groove and the inner form and having a plunger therein movable opposite to the inner form, a supply pipe extending through the base, and a burner connected to the supply pipe above the base.

5. A mold for glass vessels including a base, a hollowinner form secured removably on the top of the base, a form plate on the base and extending about the lower portion of the inner form, there being also a groove extending-about the lower portion of the inner form, a filler inserted .removably in the groove, an outer form mounted removably on the'form plate and gaged thereby with respect to the inner form, and a plunger guided by the outer form opposite to the top of the inner form, said inner form having a heater therein;

'6; A mold for glass vessels including a .base, a hollow inner form mounted on the ,50-

base and having a closed top provided with a recess in the uppermost portion thereof, a

.form plate on the base extending about the lower ortion of the imier form an outer form mounted on the form plate about the inner form and having an open neck at the top thereof, a plunger movable in the neck of the form opposite to the to'p'of the inner. form and provided with an adj ustable former.

opposite to the recess, and a cover for the recess.

' Y 7. A mold for glass vessels including a base 1providedat opposite ends thereof with hand e bars, a hollow inner form secured de-' tachably on the base and having a closed, top, said base having groove therein'ex-j tending aboutthe lower portion ofthe form, a filler insertible in the groo v-efafo'rm plate a gage shoulder, an outer formextending on the form plate against "the shoulder thereof about the inner form and provided on opposite, ends thereof with handle bars, said outer form having an open neck and a groove extending about the base of the neck intere nallv, and a plunger movable in the neck o'p-' posite to the top of the inner'form and having a groove in the lowermost edge thereof.

8. A mold for glassvessels including a base, a hollow inner form having a side wall removably arranged on the base and a top on the side wall above the base, screw-bolts v secured detachably on the base andihaving extending through the base anden'gaging the side wall of the inner form, a form late on the. base and having a gage ShOllFdGl, an outer form extending on the form plate against the shoulder thereof and about the inner form, and a plunger in the outer formto coverthe top of the inner form. I

' 9. A mold for glass vessels including a base, a hollow inner form secured on the baseand having a closed top, a form plate detachably mounted and gaged onthe base and having a gaging device, and an outer form extending on the form plate in engagement with the gaging device thereof -about the inner form and provided on opposite ends thereof with lifting devices, said outer form having an'inwardly-extending portion above the plane of the top of the inner form, said portion having a neck on the top thereofin'g flanges at opposite sidps thereof, and a I pair of hollow forms, one ormbeing an inner form to rest on the base and comprising a side wall and a closed top on the top of the 'wall, and-the other forrnj comprising a side Wall only to extend about the side wall of the inner form upon the flanges of the base, I

and screw-bolts extending through the base and engaging the side wall of the inner form, in combination With-a plunger to cover the top of the'inner form in the outer form.

12. In a mold for glass vessels, a'base havfianges at opposite sides thereof and proin vi dedon the tops of the flanges with a form late having a gage, an h ner fUl'Hl 0n the l ase, screw-bolts extending through the base and engaging the inner form, and an outer form on the form plate and in cuntac-t with the gage thereof and provided at opposite ends thereof with handles, in cl'n'nbination with a plunger [0 coverthe inner form in the outer form.

in testimony whereei, we uffix our 5x 1 1111 tures in presence of two Witnesses.

JACOB BONSHIRL. JAME5 M. STAFFORD.

\Yitnesses:

WM. El. PAYXL, E, 1. 511x105 

